No warm up. One set until you fail. There as to be a minimum number of sets. I mean I could be doing a 1 rep max day. I hit my 1 rep max on all my major lifts and that technically is a HIT routine. I don't see how something like that could be very effective.

you do warm up, but then like i said you have one workset and you just go for broke, but i dont recommend it unless you have a really good spotter, when i did it, i did forced reps or negatives almost everytime and went until i pretty much couldn't lift the weight at all

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It isn't that they cant see the solution.
It is that they cant see the problem.
-G.K. Chesterton